<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="i">
        <image :src="item.pics_big" @click="preview(i)"></image>
      </swiper-item>

    </swiper>
    <!-- 商品信息区域 -->
    <view class="goods-info-box">
      <!-- 商品价格 -->
      <view class="price">{{goods_info.goods_price}}</view>
      <!-- 商品信息主体区域 -->
      <view class="goods-info-body">
        <!-- 商品名字 -->
        <view class="goods-name">{{goods_info.goods_name}}</view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>

      <!-- 运费 -->
      <view class="yf">快递:免运费 </view>

    </view>

    <rich-text :nodes="goods_info.goods_introduce"></rich-text>

    <!-- 商品导航组件 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
        @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {
    mapState
  } from 'vuex'
  import {
    mapMutations
  } from 'vuex'

  import {
    mapGetters
  } from 'vuex'
  export default {
    computed: {
      ...mapState("m_cart", []),
      ...mapGetters('m_cart', ['total'])


    },
    watch: {

   /*  total(newVal){
       const findResult =this.options.find（x =>x.text ==="购物车")
       if(findResult){
          findResult.info=newVal
       }
            
     } */
   
     //1.定义total侦听器，指向一个配置对象
      total :{
        //handler属性用来定义侦听器的function 处理函数
        handler(newVal) {
        // 2.通过数组的find（）方法，找到购物车按钮的配置对象
        const findResult = this.options.find((x) => x.text ==="购物车")
            if(findResult) {
              // 3.动态为购物车按钮的info属性赋值
              findResult.info = newVal
            }
          },
          //immediate属性用来声明此侦听器，是否在页面初次加载完毕后立即调用
          immediate:true
          }
      },
      data() {

        return {

          goods_info: {},
          options: [{
              "icon": 'shop',
              "text": '店铺'
            },
            {
              "icon": 'cart',
              "text": '购物车',
              "info": 0
            }
          ],
          //右侧按钮信息
          buttonGroup: [{
              "text": "加入购物车",
              "backgroundColor": "#ff0000",
              "color": "#fff"
            },
            {
              "text": "立即购买",
              "backgroundColor": "#ffa200",
              "color": "#fff"
            }
          ]


        };
      },
      onLoad(optins) {

        //获取商品id
        const goods_id = optins.goods_id
        console.log(goods_id)
        //调用请求商品详情数据的方法
        this.getGoodsdetail(goods_id)

      },
      methods: {

        async getGoodsdetail(goods_id) {

          const {
            data: res
          } = await uni.$http.get("/api/public/v1/goods/detail", {
            goods_id: goods_id
          })
          if (res.meta.status !== 200) return uni.$showmsg()

          //使用字符串的replace（）方法，为img标签添加行内的style样式，从而解决图片底部空白间隙的问题
          res.message.goods_introduce = res.message.goods_introduce.replace(/<img /g,
              '<img style="display:block;"')
            .replace(/webp/g, 'jpg')

          this.goods_info = res.message
        },

        preview(i) {
          uni.previewimage({
            //预览时，默认图片的索引
            current: i,
            //所有图片url数组
            urls: this.goods_info.pics.map(x => x.pics_big)

          })
        },

        onClick(e) {
          // uni.showToast({
          //   title: `点击${e.content.text}`,
          //   icon: 'none'
          // })

          if (e.content.text === '购物车') {
            uni.switchTab({
              url: "/pages/cart/cart"
            })
          }
        },
        buttonClick(e) {
          console.log(e)
          this.options[1].info++

          //判断是否为加入购物车
          if (e.content.text === '加入购物车') {
            //2. 组织一个商品的信息对象
            const goods = {
              goods_id: this.goods_info.goods_id,
              //商品的Id
              goods_name: this.goods_info.goods_name,
              // 商品的名称
              goods_price: this.goods_info.goods_price, // 商品的价格
              goods_count: 1,
              //商品的数量
              goods_small_logo: this.goods_info.goods_small_logo, //商品的图片
              goods_state: true
              //商品的勾选状态

            }

            //3.将商品添加到购物车
            this.addToCart(goods)
          }



        },

        ...mapMutations('m_cart', ['addToCart'])
      }
    }
</script>

<style lang="scss">
  swiper {
    height: 750rpx;

    image {
      height: 100%;
      width: 100%;
    }
  }

  .goods-info-box {
    padding: 10px;
    padding-right: 0;

    .price {
      color: #C00000;
      font-size: 18px;
      margin: 10px 0;
    }

    .goods-inifo-body {
      display: flex;
      justify-content: space-between;

      .goods-name {
        font-size: 13px;
        margin-right: 10px;
      }

      .favi {
        width: 120px;
        font-size: 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        border-left: 1px solid #efefef;
        color: gray;
      }

    }

    .yf {
      font-size: 12px;
      color: gray;
      margin: 10px 0;
    }


  }

  .goods_nav {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;

  }

  .goods-detail-container {
    padding-bottom: 10px;
  }
</style>